// function getRem(design_w, unit) {
//     var html = document.getElementsByTagName("html")[0];
//     var real_w = document.documentElement.clientWidth;
//     (real_w > design_w) && (real_w = design_w);
//     html.style.fontSize = real_w / design_w * unit + "px";
// }
// getRem(750, 100);
// //window.addEventListener("resize",getRem);
// window.onresize = function () {
//     getRem(750, 10)
// };